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TS3000GB0A0 Folha de dados(PDF) 9 Page - Integrated Device Technology |
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TS3000GB0A0 Folha de dados(HTML) 9 Page - Integrated Device Technology |
9 / 25 page 9 of 25 November 4, 2014 IDT Maximum RL Value vs. Bus Capacitance (CBUS) for an I 2C Bus Select Address (SA0, SA1, SA2) These input signals are used to set the value that is to be looked for on the three least significant bits (b3, b2, b1) of the 7-bit Slave Address. In the end application, SA0, SA1 and SA2 must be directly (not through a pull-up or pull-down resistor) connected to VDD or VSS to establish the Slave Address. When these inputs are not connected, an internal pull-down circuitry makes (SA0, SA1, SA2) = (0, 0, 0). EVENT The TS3000GB0A0 EVENT pin is an open drain output that requires a pull-up to VDD on the system motherboard or integrated into the master controller. The TS3000GB0A0 EVENT pin has three operating modes, depending on configuration settings and any current out-of-limit conditions. These modes are Interrupt, Comparator, or TCRIT Only. In Interrupt Mode the EVENT pin will remain asserted until it is released by writing a '1' to the “Clear Event” bit in the Status Register. The value to write is independent of the EVENT polarity bit. In Comparator Mode the EVENT pin will clear itself when the error condition that caused the pin to be asserted is removed. When the temperature is compared against the TCRIT limit, then this mode is always used. Finally, in the TCRIT Only Mode the EVENT pin will only be asserted if the measured temperature exceeds the TCRIT Limit. Once the pin has been asserted, it will remain asserted until the temperature drops below the TCRIT Limit minus the TCRIT hysteresis. The next figure illustrates the opera- tion of the different modes over time and temperature. Systems that use the active high mode for EVENT must be wired point to point between the TS3000GB0A0 and the sensing controller. Wire-OR configurations should not be used with active high EVENT since any device pulling the EVENT signal low will mask the other devices on the bus. Also note that the normal state of EVENT in active high mode is a 0 which will continually draw power through the pull-up resistor. |
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Descrição semelhante - TS3000GB0A0 |
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